Should be early. The last 6 numbers is build number. You were the 147421 wagon built of that series. So on or after car 173715 is when they changed parts.e147421
You have to be careful though as I've found. Not every single part will have the same split as parts were changed in production as they need arose.
Your 2002 is an early vin B5.5 btw. (Not to confuse early vin as B5 and later vin B5.5, each has splits in the production run)
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